170 BC

Millennium:	1st millennium BC
Centuries:	3rd century BC – 2nd century BC – 1st century BC
Decades:	200s BC 190s BC 180s BC – 170s BC – 160s BC 150s BC 140s BC
Years:	173 BC 172 BC 171 BC – 170 BC – 169 BC 168 BC 167 BC

170 BC by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments

**170 BC in other calendars**
Gregorian calendar	170 BC
Ab urbe condita	584
Armenian calendar	N/A
Bahá'í calendar	-2013 – -2012
Bengali calendar	-762
Berber calendar	781
Buddhist calendar	375
Burmese calendar	-807
Byzantine calendar	5339 – 5340
Chinese calendar	[[Sexagenary cycle\|]]年 (2467/2527) — to — [[Sexagenary cycle\|]]年 (2468/2528)
Coptic calendar	-453 – -452
Ethiopian calendar	-177 – -176
Hebrew calendar	3591 – 3592
Hindu calendars
- Bikram Samwat	-113 – -112
- Shaka Samvat	N/A
- Kali Yuga	2932 – 2933
Holocene calendar	9831
Iranian calendar	791 BP – 790 BP
Islamic calendar	815 BH – 814 BH
Japanese calendar
Korean calendar	2164
Thai solar calendar	374

Events

In Thessaly, King Perseus of Macedon repulses a Roman army which is commanded by Aulus Hostilius Mancinus. Meanwhile, the Thracian city of Abdera is sacked by Roman and Pergamese troops.

With the guardians of the young king Ptolemy VI Philometor demanding the return of Coele-Syria to Egyptian control, the Seleucid king, Antiochus IV Epiphanes, decides on a preemptive strike against Egypt and invades the country, conquering all but the city of Alexandria. He is also able to capture Ptolemy VI.
Antiochus IV decides to let Ptolemy VI continue as king of Egypt, but as his puppet. He does this to minimise any reaction from Rome towards his invasion. Antiochus IV then departs Egypt to deal with disturbances in Palestine, but he safeguards his access to Egypt with a strong garrison in Pelusium.
With Antiochus IV now absent from the country, the citizens of Alexandria choose Ptolemy VI's brother Ptolemy VIII Euergetes II as their king. The two Ptolemy brothers agree to rule Egypt jointly with their sister Cleopatra II and Coele Syria is invaded by the Egyptian forces.

The usurped high priest of Judea, Jason, does not abandon his claims to being the high priest which he has lost to Menelaus two years earlier. While Antiochus IV is waging war against Egypt, he succeeds in making himself master of Jerusalem once more and forces Menelaus to seek refuge in the citadel.

Around this time, Eucratides, who is either a rebellious Bactrian official or a cousin of the Seleucid king Antiochus IV Epiphanes, captures the throne of the Greco-Bactrian Kingdom by toppling the Euthydemid dynasty's king Antimachus I.

Dionysios Thrax, a Hellenic grammarian who will live and work in Alexandria and later on Rhodes (d. 90 BC)
Lucius Accius (or Lucius Attius), Roman tragic poet and literary scholar (d. c. 86 BC)